What is the polar vortex and is global warming to blame?

The Extinction Chronicles

https://www.cbsnews.com/embed/video/?v=1.d36147271ea395b861be0f25381dc40a170b4936#zVZtb9s2EP4rgoDtUxiLepeBokibdSvWDEHTYFvjwqCok8WWElWRsuMV%2Be%2B7k%2Bwk3ZeuQFE0AUKKPB6fe%2FjcXT75YnSm12LvL90wwom%2FVRUYf%2FnJVw5a6y9vPvlu34O%2F9Lem8k98VeG0ioss50Kwihc1i2sesqLGTx7HUV0mXKRRhrZtf%2Fsa6pd04lq0V%2BWztxe%2FNSBf7f%2B87l%2FKLH77d3zW7Ncf12%2FdbD2Zlk6%2B%2Fvjqr4%2Fj2sa4bPW4oStBVHrPeqPFwLZmcHDL7A6gV92GtaragXVsp1yDf7qKyUZpbZmwTJsdDa3qRsvSBD065TQFdD659CaX3uzSO7r0LmaXaF6PWn%2FNEY9QeITCm1F4wnqIgoYJhTehkKIznZJCv%2Fn2vp1q0Vi0vb%2FkSZxnaRTlAf6c%2BNU4CKdMhxtZ8vD5SpSgEUMQLhNyoOfvDkPHJ2%2FFBixpwtL7NM71drlarBaytB3sbHiKE4X3OSVPpWlXi2YsVwu1WgyrRRjwYrUIOM5wrIIIRC4zVuehYHEigOWSAwOZZGkhszKIg9XCNWNbdkLp1SKNg9soxbWMhzwVoahrSIIiKaM85zRkssqjhJd0R1gw6dpZI70euw2w1gwb0TGO3tMgYAd3p%2B%2F7DUbZfPdweJgHt1mIizUPqiIPsiSQUEchD4o6LgvIqjjNZRGHXx%2FP3YnfD7BVsLse6C0ppH4sNUaxVXrf3c7BVGoA6VaLvJYRR1YryHgEgYximSQyLiUEUZTyGC3%2FR5bjFYNJC7yBRGl2p21PSXuoIohB9EjcFvmqlQZnrEUWnlozDhKeqF5UzLoBBGp383MvXPPkp%2FBFC5USNPa3%2BJcYxyHgNKcZjxFfiCRGBY%2BnnbBYP39zsb4kni4nntYXE0%2Frmadw3Temg9M2GvMjuPBHRTdOj%2Fegyt1ud3pQ5vyAE3x8nW9UEFcLqur2Zdsb62Dwl7XQFhsBtgUlp0ZAWRKnQZwmYc6yJK8Y54BaqFAQQcDzGnIRBGXwUKwRL3ONsiTXDvFQrikYxCAbbDQ3tO%2FRvnfcf4fiReTWVFgJOfoBYalI%2BZycwqaFzs0bY48it%2FYeptD6TEpceaaN%2FHBfsuy1heFqLK0cVAnVvbntTWfNcLRr4PbsHGoxakfV7wR%2F%2FWn12cNqVJzEyUlS%2BHfvsEmBE1MldFg4YbOnOa41hkgSfQ9d5d%2Fd3RNRg3DjAEg%2FFVqgBnrophorzMzMsbdQAqNX%2BYGWiXf7SydKTeDn1iwGrEgazka8bqBWeeMnRVVCFnAmorhkcRbGrIxFzSoIRAxFlWOx9N%2F95%2BgfogU6%2FB7q2ivpWSrQWj2ym%2FpwnUGMbx6wMq2AxQXkrIghYnVUp1mVRYmMhH9%2F5HIszzFCPEcpwRBSWHicL5N0GWQPZsdm97jLLb1dI5ynSBPg0fHPm%2BAOSWxg8GCLKvAE9j403WhTCu3txEDZ6TnjlRrjevroqploaTqH59aHVdyvsEjK43YF9gNKfcqBc9gSfpz32PEOBpR4a%2FpniJSI42%2BKkuTGdyAboozWrrCiTk11Xp0XD%2BdRraQ5tQUMpPQPiTUxHPKizLFMfCGppgPzox39lx%2Bu8AZyEkURtnWtWoVaje%2BDv5pq2JyKHoVAhwbk7lILV5uhnQAc6sqa4K4fmKDPw30Hi4m11mwG0TdK%2Fg57OwnIlC%2FGbg79hL6eU06YYU9sdtWISUJTrFr9iKXlcjC1kgo6eVwV3f5K%2FUNvssHEQV4R%2FwZ%2BHczYTxZjRx6QZAdCq7GltOjJi36EjdCiNXT0eLhbUSLd%2F3d1%2FaVySjPsYo%2FLKMmRKSphwCY1f747y5FNcmRIKZnOcmQHOTJn2CTHqbhOHePSIE4k6qAKjdX7oLMfACHBODz497hu6mBfDPvb97m7u38B
Forecasters say millions of people in the Midwest and Great Lakes will see record-shattering wind chills from 40 to 65 degrees below zero this week — cold so extreme it could cause frostbite on exposed skin in five minutes or less. Some 100 million people will experience temperatures near or below zero. Here’s what you need to know about the polar vortex behind the deep freeze.

What is the polar vortex?

The frigid air will come from a brief visit by the polar vortex — which is a real meteorological phenomenon, not just a sensational headline. It’s a whirling mass of cold air circulating in the mid- to upper-levels of the atmosphere, present every winter.

It usually stays closer to the poles but sometimes breaks apart, sending chunks of Arctic air southward into the U.S. during winter.

vortex.jpg
NOAA

This week’s particularly cold…

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